diff --git a/README.md b/README.md
index fc1198f..b6b6268 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Everything you need to create Astrology and Astronomy applications with javascri
 
 [Official programmers documentation for the Swiss Ephemeris by Astrodienst AG](https://www.astro.com/swisseph/swephprg.htm)  
 [Official guide for the Swiss Ephemeris by Astrodienst AG](https://www.astro.com/ftp/swisseph/doc/swisseph.htm)  
-[Sweph on NPM](http://npm.com/package/sweph)
+[Sweph on NPM](http://npmjs.com/package/sweph)
 
 ## Installation and Licensing
 
diff --git a/index.d.ts b/index.d.ts
index f1880f9..4cc58da 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -2,9 +2,10 @@
  * ## Sweph
  * Definitive Swiss Ephemeris bindings for Node.js  
  * 
- * [Official documentation for the Swiss Ephemeris](https://www.astro.com/swisseph/swephprg.htm)  
+ * [Official programmers documentation for the Swiss Ephemeris](https://www.astro.com/swisseph/swephprg.htm)  
+ * [Official guide for the Swiss Ephemeris](https://www.astro.com/ftp/swisseph/doc/swisseph.htm)  
  * [Sweph on Github](https://github.com/timotejroiko/sweph)  
- * [Sweph on NPM](http://npm.com/package/sweph)  
+ * [Sweph on NPM](http://npmjs.com/package/sweph)  
  * 
  * ### Usage
  * ```